ASUS PRIME B850M-K
The current ASUS PRIME B850M-K price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · AM5
Retailer photo of ASUS PRIME B850M-K (Micro ATX). View this offer in Where to buy
Works well for: Gaming Build
Trade-offs: you want strong value with Balanced priorities specifically
Move a slider and the page re-scores this product against the same market frame.
What does it cost today, and is that a good price?
Market confidence: LowAt CAD 320 the ASUS PRIME B850M-K is priced in line with its CAD 320 representative market level. Only one retailer currently backs that price, so the level is a single data point rather than a market.
Limited market: only one retailer currently has a verified offer, so treat this price as a single data point.
Prices & availability
ASUS PRIME B850M-K: current price and offers
Compare the offers we track for this model, across variants and retailers.
1 tracked offers · 1 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| ASUS PRIME B850M-K (Micro ATX) | Newegg | New | CAD 320 | 32 | 2026-11-08 | View offer → |
| ASUS PRIME B850M-KMultiple variants available | Amazon Affiliate | Varies | Find on Amazon | Not tracked | No price snapshot | Find on Amazon → |
Prices are dated snapshots, not live quotes — confirm the final price at the store. New, refurbished and used offers are listed separately; used offers carry warranty and seller risk.
Performance and where it ranks
Two different questions, side by side. Performance compares what the hardware can do; Value compares what that capability costs at today’s price. A product can rank high on one and low on the other — that gap is the point.
Performance Balanced
How much it can do. Price plays no part in this ranking.
#189 of 698 graded motherboards
- #186 ASUSASUS PRIME B850M-A 78
- #187 ASUSASUS PRIME B850M-A WIFI 78
- #188 ASUSASUS PRIME B850M-A WIFI-CSM 78
- #189 ASUSASUS PRIME B850M-K 78
- #190 ASUSASUS Pro WS B850M-ACE SE 78
- #191 ASUSASUS ROG STRIX B850-A GAMING WIFI 78
- #192 ASUSASUS ROG STRIX B850-E GAMING WIFI 78
Value Balanced
How much of that you get for today’s price.
#287 of 722 currently priced motherboards
- #284 MSIMSI X470 GAMING PLUS 32
- #285 MSIMSI PRO Z790-S WIFI 32
- #286 ASUSASUS PRIME A520M-R 32
- #287 ASUSASUS PRIME B850M-K 32
- #288 MSIMSI PRO Z790-P WIFI DDR4 32
- #289 ASUSASUS PRIME B650M-K 32
- #290 ASUSASUS ROG STRIX Z890-H GAMING WIFI 32
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#144 of 680 graded motherboards
- #141 ASUSASUS ROG STRIX B650E-I GAMING WIFI 90
- #142 ASUSASUS TUF GAMING B650E-PLUS WIFI 90
- #143 GigabyteGigabyte B650E AORUS ELITE X AX ICE 90
- #144 ASUSASUS PRIME B850M-K 90
- #145 ASUSASUS ROG STRIX B850-E GAMING WIFI 90
- #146 ASUSASUS ROG STRIX B850-F GAMING WIFI 90
- #147 ASUSASUS TUF GAMING B850-BTF WIFI W 90
Value Gaming Build
How much of that you get for today’s price.
#264 of 722 currently priced motherboards
- #261 GigabyteGigabyte B650I AORUS ULTRA 34
- #262 MSIMSI X470 GAMING PLUS 34
- #263 ASUSASUS TUF GAMING Z690-PLUS WIFI D4 34
- #264 ASUSASUS PRIME B850M-K 34
- #265 GigabyteGigabyte B660 GAMING X DDR4 34
- #266 GigabyteGigabyte X870 A ELITE X ICE 34
- #267 ASUSASUS ROG STRIX Z590-E GAMING WIFI 34
Performance Workstation
How much it can do. Price plays no part in this ranking.
#455 of 687 graded motherboards
- #452 GigabyteGigabyte Z390 UD 55
- #453 ASUSASUS ROG MAXIMUS Z690 APEX 55
- #454 MSIMSI B450 GAMING PRO CARBON AC 54
- #455 ASUSASUS PRIME B850M-K 54
- #456 MSIMSI B850M GAMING WIFI 54
- #457 MSIMSI PRO B850M-G 54
- #458 ASUSASUS ROG STRIX B460-G GAMING 54
Value Workstation
How much of that you get for today’s price.
#355 of 722 currently priced motherboards
- #352 MSIMSI PRO B760-P DDR4 II 51
- #353 MSIMSI MPG Z490 GAMING EDGE WIFI 51
- #354 MSIMSI MPG Z590M GAMING EDGE WIFI 50
- #355 ASUSASUS PRIME B850M-K 50
- #356 MSIMSI MEG B550 UNIFY-X 50
- #357 MSIMSI MEG Z590 UNIFY7D38-001R 50
- #358 GigabyteGigabyte B850I AORUS PRO 50
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#71 of 698 graded motherboards
- #68 MSIMSI MAG B650M MORTAR WIFI 76
- #69 MSIMSI PRO B650M-B 76
- #70 ASUSASUS B850M-AYW-GAMING-WIFI 76
- #71 ASUSASUS PRIME B850M-K 76
- #72 ASUSASUS TUF GAMING B850M-E WIFI 76
- #73 GigabyteGigabyte B850M DS3H 76
- #74 GigabyteGigabyte B850M GAMING X WIFI6E 76
Value Small-Case Fit
How much of that you get for today’s price.
#267 of 722 currently priced motherboards
- #264 MSIMSI MEG Z490 ACE 33
- #265 GigabyteGigabyte Z890 AORUS ELITE WIFI7 33
- #266 ASUSASUS ROG STRIX B650E-F GAMING WIFI 33
- #267 ASUSASUS PRIME B850M-K 33
- #268 ASUSASUS TUF GAMING X870E-PLUS WIFI7 33
- #269 SapphireSapphire NITRO+ B850M WIFI 33
- #270 GigabyteGigabyte Z890I AORUS ULTRA 33
These ladders follow the preset scenario shown above. Your own weights re-score this product, not the whole field.
What it is good for
| Scenario | this productCapability grade · Value at current price | Higher capability | Higher Value with current priorities |
|---|---|---|---|
| Balanced (all-round)Weighted all-round view | GradeNo grade Value32 | Higher capability MSI PRO X870E-S EVO WIFI 25 +29% capability · -3% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF 70 +0% capability · -38% price |
| Gaming BuildScenario capability | GradeA Value34 | Higher capability MSI PRO B650-P WIFI S 50 +11% capability · +2% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF B 72 -7% capability · -38% price |
| WorkstationScenario capability | GradeD Value50 | Higher capability Gigabyte X870 AORUS ELITE WIFI7 A 86 +75% capability · +9% price | Higher Value with current priorities ASUS B650E MAX GAMING WIFI C 97 +40% capability |
| Small-Case FitScenario capability | GradeC Value33 | Higher capability Gigabyte B550I AORUS PRO AX S 45 +32% capability · -17% price | Higher Value with current priorities MSI B550M PRO-VDH WIFI C 100 -7% capability |
Balanced has no letter: it is a weighting preset, not a capability rubric. A grade answers “how well does this handle that job?” — price is never part of it. Relative Value puts the current market price back in.
Compare these grades with the full tier list
Browse shortlists for different uses
Trade-offs
Works well if
- Gaming Build is your main prioritygraded A for Gaming Build on the same rubric as the tier list
Consider other options if
- You want strong value with Balanced priorities specificallyat today's market no realistic price for this model reaches strong value with Balanced priorities — the calculation only gets there near CAD 128, against a cheapest tracked CAD 320
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 70 against its 32 with Balanced priorities, at CAD 200
- Not the pick if Workstation is your main useit grades only D there
Works well if
- Gaming Build is your main prioritygraded A for Gaming Build on the same rubric as the tier list
Consider other options if
- You want strong value for Gaming Build specificallyat today's market no realistic price for this model reaches strong value for Gaming Build — the calculation only gets there near CAD 136, against a cheapest tracked CAD 320
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 72 against its 34 for Gaming Build, at CAD 200
- Not the pick if Workstation is your main useit grades only D there
For the selected scenario this is not a strong fit — the grade above is the reason, and the models below suit it better.
Works well if
- Workstation is not actually your main job — Gaming Build isit grades D for Workstation, but A for Gaming Build
Consider other options if
- Not the pick if Workstation is your main useit grades D there; Gigabyte X870 AORUS ELITE WIFI7 grades A at CAD 350
- You want strong value for Workstation specificallyat today's market no realistic price for this model reaches strong value for Workstation — the calculation only gets there near CAD 127, against a cheapest tracked CAD 320
- Value for money matters more to you than this exact modelASUS B650E MAX GAMING WIFI holds Relative Value 97 against its 50 for Workstation. Check on Amazon.
For the selected scenario this is not a strong fit — the grade above is the reason, and the models below suit it better.
Works well if
- Small-Case Fit is not actually your main job — Gaming Build isit grades C for Small-Case Fit, but A for Gaming Build
Consider other options if
- Not the pick if Small-Case Fit is your main useit grades C there; Gigabyte B550I AORUS PRO AX grades S at CAD 265
- You want strong value for Small-Case Fit specificallyat today's market no realistic price for this model reaches strong value for Small-Case Fit — the calculation only gets there near CAD 133, against a cheapest tracked CAD 320
- Value for money matters more to you than this exact modelMSI B550M PRO-VDH WIFI holds Relative Value 100 against its 33 for Small-Case Fit. Check on Amazon.
Every line states the fact it was derived from, for the scenario selected above. Thresholds are calculated points on our value curve — information about where the maths turns, not instructions about what to pay.
Similar options to the ASUS PRIME B850M-K
Chosen for Balanced
Chosen for Gaming Build
Chosen for Workstation
Chosen for Small-Case Fit
Alternatives stay near this product’s price range. Step-up options may exceed the standard budget envelope when the capability gain is meaningful.
More head-to-head comparisons in this category
Upgrade planner
Judge the change in the active scenario, then make the cash gap explicit.
Using page scenarioWhat are you upgrading from? These are the axes we compare on, and where this product stands in the current market.
Capability differences are expressed as tiers and index points, not as benchmark percentages we did not measure.
Specifications and compatibility
What this product is, and what to check before it goes into your build.
Show all specifications
Features
- RAID
- Yes
Warranty
- Warranty
- 3 years
- Manufacturer part number
- PRIME B850M-K
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-11-08–2026-11-09
What to check in your build
AM5
Takes AM5 processors — a matching socket is necessary but not sufficient, check the vendor's CPU support list
Micro ATX
Micro ATX — the case must accept this size
DDR5 · 2 slots · up to 128 GB
Takes DDR5 memory only — another DDR generation does not fit the slots
Found an error? Report this specification Email the field, corrected value and an optional source.
Compatibility guidance is practical help, not a score. Missing data is shown as unknown, never invented.
Summary
ASUS PRIME B850M-K offers a balanced view across an all-round mix of priorities. It ranks #189 by capability in the current modelled field. Its clearest measured strength is feature score 51. ASUS B650E MAX GAMING WIFI currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers A-grade capability for Gaming Build. It ranks #144 by capability in the current modelled field. Its clearest measured strength is feature score 51. ASUS B650E MAX GAMING WIFI currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers D-grade capability for Workstation. It ranks #455 by capability in the current modelled field. Its clearest measured strength is feature score 51. The D grade is the decisive limitation for this workload.
ASUS PRIME B850M-K offers C-grade capability for Small-Case Fit. It ranks #71 by capability in the current modelled field. Its clearest measured strength is feature score 51. The C grade is the decisive limitation for this workload.
FAQ
Why does Relative Value change when I choose another scenario?
Each scenario changes the weights applied to capability, price and the other published factors. The hardware facts stay fixed, but the value question changes, so its score and rank can change too.
Why can Amazon appear without a tracked price?
Amazon listing snapshots can participate in Value while fresh. We show Check on Amazon instead of its price; confirm the current price and availability at the store. When no current listing snapshot exists, Amazon is a search link only.
Useful links & sources
offer frame 2026-11-08–2026-11-09 · formula mobo-value-v6.1 · facts facts-2026-11-09 · Relative Value is an estimate from our current dataset, the selected weights and dated market prices — not an official product rating and not a price forecast. Target prices are calculation thresholds, not predictions. Methodology We are not a shop. Affiliate links may earn us a commission; they never change the calculations or the ranking.